E-36, the Small Angle Proton-Proton Scattering Experiment, had been approved on Feb. 1, 1970. The experimenters came from the National Accelerator Laboratory, the Joint Institute for Nuclear Research (Dubna, USSR), the University of Rochester (Rochester, New York) and Rockefeller University (New York City), making it a model of cooperation between Americans and Soviets at a time when Cold War tensions still ran high.